Here is a comprehensive collection of multiple choice questions that could be asked from Class 8 Science Chapter 4 Metals and Non-metals.

Choose the correct answer

1. Which of the following is a dull material?

a) sulphur

b) gold

c) aluminium

d) copper

2. Metals are …………………………….. while non-metals are ……………………………

a) shiny, dull

b) dull, shiny

c) soft, hard

d) shiny, hard

3. Metals can be distinguished from non-metals on the basis of their ………………………….. and ……………………….

a) physical and chemical properties

b) chemical properties alone

c) physical properties alone

d) None of the above

4. ………………………… and …………………………. are two physical properties of metals

a) dullness and softness

b) lustre and hardness

c) heaviness and hardness

d) lustre and softness

5. The shape of metals ……………………………. on beating.

a) Change

b) do not change

c) change but return to previous state

6. The property of metals by which they can be beaten into thin sheets is called …………………………………..

a) viscosity

b) malleability

c) permeability

d) ductility

7. Materials that are not malleable are …………………………………..

a) metals

b) non-metals

c) liquids

d) alloys

8. Which of the following is a good conductor of electricity?

a) plastic

b) iron

c) coal

d) sulphur

9. The property of metals by which they can be drawn into wires is called ………………………………..

a) permeability

b) lustrousness

c) malleability

d) ductility

10. The materials which produce ringing sounds are …………………………………..

a) sonorous

b) cacophonous

c) caustic

d) malleable

11. Find the odd one out.

a) sulphur

b) magnesium

c) zinc

d) copper

12. Which of the following is an example of a non-metal?

a) hydrogen

b) zinc

c) mercury

d) aluminium

13. Which of the following is not a property of metals?

a) lustre

b) brittleness

c) malleability

d) heat conductivity

14. Which of the following is a soft metal?

a) zinc

b) magnesium

c) sodium

d) sulphur

15. The only metal which is found in liquid state at room temperature

a) sodium

b) magnesium

c) mercury

d) potassium

16. Pick the odd one out

a) magnesium

b) iron

c) copper

d) potassium

17. The reaction of iron with which gas causes its rusting?

a) nitrogen

b) hydrogen

c) oxygen

d) carbon

18. The green deposit found on copper vessels is a mixture of copper hydroxide and ………………………………….

a) copper oxide

b) copper carbonate

c) copper permanganate

d) copper dioxide

19. In general, metallic oxides are …………………………….. in nature.

a) acidic

b) basic

c) neutral

d) could be basic or acidic

20. When sulphur dioxide dissolves in water, we get ……………………………………..

a) sulphuric acid

b) sulphurous acid

c) sulphur oxide

d) None of these

21. What is the chemical formula of sulphurous acid?

a) H₂SO₃

b) H₂SO₄

c) 2HSO₄

d) 2HSO₃

22. Oxides of non-metals are usually ……………………………….. in nature.

a) basic

b) acidic

c) neutral

d) None of these

23. Which of the following is stored in kerosene to prevent reaction with oxygen and water?

a) magnesium

b) sodium

c) sulphur

d) potassium

24. Non-metals which are highly reactive in air are usually stored in ………………………………..

a) water

b) oil

c) kerosene

d) petrol

25. Which of the following is the most reactive in air and water?

a) potassium

b) iron

c) sodium

d) copper

26. Which of the following is the most reactive non-metal?

a) sulphur

b) coal

c) phosphorus

d) wood

27. Which of the following is stored in water to prevent contact with atmospheric oxygen?

a) sodium

b) calcium

c) magnesium

d) phosphorus

28. Which gas is released when metals react with acids?

a) oxygen

b) hydrogen

c) nitrogen

d) carbon

29. Which of the following metals do not react with dilute hydrochloric acid?

a) aluminium

b) copper

c) iron

d) gold

30. When metals react with sodium hydroxide, they produce ………………………………….

a) oxygen

b) hydrogen

c) nitrogen

d) carbon

31. Which of the following is the most reactive?

a) zinc

b) copper

c) iron

32. Which of the following is a non-metal used in fertilizers?

a) carbon

b) nitrogen

c) oxygen

d) chlorine

33. Which non-metal is used for purifying water?

a) ammonia

b) phosphorus

c) chlorine

d) calcium

34. Which non-metal is used for creating an antiseptic solution?

a) iodine

b) potassium

c) calcium

d) phosphorus

35. Which non-metal is used in fire crackers?

a) iodine

b) phosphorus

c) nitrogen

d) silicon

36. The smallest unit of an element is ……………………….

a) molecule

b) atom

c) proton

d) electron

37. Elements which possess the characteristics of both metals and non-metals are:

a) alloys

b) metalloids

c) noble metals

answers

1. sulphur; 2. shiny and dull; 3. physical and chemical properties; 4. lustre and hardness; 5. change; 6. malleability; 7. non-metals; 8. iron; 9. ductility; 10. sonorous; 11. sulphur; 12. hydrogen; 13. brittleness; 14. sodium (sulphur is not a metal); 15. mercury; 16. potassium (It is a soft metal); 17. oxygen; 18. copper carbonate; 19. basic; 20. Sulphurous acid; 21. H₂SO₃; 22. acidic; 23. sodium; 24. water; 25. sodium; 26. phosphorus; 27. phosphorus; 28. Hydrogen; 29. Copper; 30. hydrogen; 31. zinc; 32. nitrogen; 33. chlorine; 34. iodine; 35. phosphorus; 36. atom; 37. metalloids